Exclusion criteria:
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Exclusion criteria of PCOS:
1. Not diagnosed as PCOS;
2. Taking antibiotics history within 3 months;
3. Allergic constitution or allergic to various kinds of medicine;
4. Hyperandrogenism due to other reasons, including hyperprolactinemia, thyroid disease, congenital adrenal hyperplasia, Cushing syndrome, etc.;
5. Pathological endometrial changes, such as uterine malformation, hysteromyoma, etc., diagnosed by B ultrasound;
6. Genital tract malformation, gonadal dysgenesis, fallopian tube block, etc.;
7. Severe heart, liver, or renal dysfunction or hematological, respiratory, cardiovascular, psychiatric, or other metabolic disease;
8. Participation in other clinical trials at the same time;
9. Gastrointestinal surgery history;
10. Smoking history, alcohol history, inflammatory bowel disease, irritable bowel syndrome, autoimmune diseases, cancer and other disease that may influence the gut microbiota;
11. Taking probiotics with 1 month;
12. Suffering disease(s) causing inflammation without control;
13. Anxiety and depression;
Note: 1 to 8 are suitable for clinical observation. 1 to 13 are suitable for gut microbiota analysis.
Exclusion criteria of health participants:
1. Taking antibiotics history within 3 months;
2. Smoking history, alcohol history;
3. Diagnosed as psychosis, anxiety, depression, cognitive disorder, and allergic constitution. 4. Pregnant and breast-feeding woman;
5. Gastrointestinal surgery history;
6. Inflammatory bowel disease, irritable bowel syndrome, autoimmune diseases, cancer and other disease that may influence the gut microbiota;
7. Taking probiotics with 1 month;
8. Suffering disease(s) causing inflammation without control;
9. Participation in other clinical trials at the same time.
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